814906949 has 2 divisors, whose sum is σ = 814906950. Its totient is φ = 814906948.

The previous prime is 814906943. The next prime is 814906969. The reversal of 814906949 is 949609418.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 795634849 + 19272100 = 28207^2 + 4390^2 .

It is a cyclic number.

It is not a de Polignac number, because 814906949 - 2⁴ = 814906933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 814906897 and 814906906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814906943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407453474 + 407453475.

It is an arithmetic number, because the mean of its divisors is an integer number (407453475).

Almost surely, 2^814906949 is an apocalyptic number.

It is an amenable number.

814906949 is a deficient number, since it is larger than the sum of its proper divisors (1).

814906949 is an equidigital number, since it uses as much as digits as its factorization.

814906949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 814906949 is about 28546.5750835367. The cubic root of 814906949 is about 934.0483130204.

The spelling of 814906949 in words is "eight hundred fourteen million, nine hundred six thousand, nine hundred forty-nine".